Slimki = Slick; Cybanky = Cybonis?

Slimki = Slick; Cybanky = Cybonis?

I am starting to try to break down my maternal grandfather's "brick wall". The information I have on him is as follows:

His Americanized name is Michael Slick. His marriage certificate to my grandmother indicates his father's name is Domenick Slmki and mother's name is Mary Boshinski. I believe he arrived in the US about 1903. I could not find his WWI draft registration; his WWII registration indicates he came from Cybansky, Russia. His birth date is 25 May 1880 or 1881. I could not find a ship manifest with his Americanized name on it. He settled in Enfield, CT.

His daughter Emma (my 100 year old aunt) is still very sharp, and says she remembers him speaking Polish and Russian, and that his name was pronounced something like "on-CHEE-lik" or "un-CHEE-lik". She also mentioned he had several brothers but never met one of them. It is unknown if they also emmigrated.

I am hoping one of you experienced readers will point me in the right direction. Am I on the right track that Cybansky is probably Cibonys, Lithuania? Don't know what to think about his name. Thanks in advance for any help!